The No. l subway, at the end of 20l4, will greatly improve the traffic conditions in Qingdao.
. It is the first time that I _____ abroad. A. have been B. was B. will have been D. am
— Let’s go to a movie after work, OK? — ___________. I am free tonight.
It was not until he arrived at the office_____ realized he had forgotten the key.
. You can’t imagine _______ when they received those nice Christmas presents.
. ____ of the land in my hometown ____ covered with trees and grass.